The Arduino 4WD Smart Car Kit is an educational robotics platform designed for beginners, students, and makers to learn programming, electronics, and autonomous driving concepts. Equipped with line tracking, ultrasonic obstacle avoidance, Bluetooth control, and expandable modules, this kit provides a complete hands‑on experience for STEM learning and DIY robotics development. Compatible with Scratch 3.0, Mind+, and Arduino IDE, the kit supports both graphical and text‑based programming, making it suitable for classrooms, training centers, and personal projects.
Features
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4WD smart car chassis with high‑torque motors
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Multiple control modes: line tracking, ultrasonic obstacle avoidance, Bluetooth
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Arduino‑compatible UNO mainboard
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Supports Scratch 3.0 & Mind+ graphical programming
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Expandable design for sensors and modules
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Durable chassis available in 2WD or 4WD configurations
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Ideal for STEM education, robotics training, and DIY projects
Specifications
| Parameter | Value |
|---|---|
| Main Controller | Arduino‑compatible UNO |
| Chassis Options | 2WD / 4WD |
| Control Modes | Line tracking, ultrasonic obstacle avoidance, Bluetooth |
| Programming Platforms | Scratch 3.0, Mind+, Arduino IDE |
| Sensors | Line‑tracking module, ultrasonic distance sensor |
| Power | Battery‑powered (varies by kit configuration) |
| Application Level | Beginner to intermediate robotics learning |
Application Scenarios
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STEM education and classroom robotics courses
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Robotics competitions and training
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Arduino programming practice
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DIY smart car and autonomous driving experiments
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Line‑tracking and obstacle‑avoidance projects
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Wireless control and interactive learning
2WD Smart Car vs 4WD Smart Car
| Item | 2WD Smart Car | 4WD Smart Car |
|---|---|---|
| Dimensions | 183mm × 162mm × 85mm | 205mm × 162mm × 85mm |
| Battery Life | ≥90 minutes | ≥180 minutes |
| Power Battery | 2 × 18650 lithium batteries | 2 × 18650 lithium batteries |
| Battery Capacity | 7.4V 2400mAh | 7.4V 4200mAh |
| Drive Motors | 2 × 1:48 strong magnetic anti‑interference motors | 4 × 1:48 strong magnetic anti‑interference motors |
| Drive Wheels | 2 × 65mm wheels + 1 caster wheel | 4 × 65mm wheels |
| System Power | LDO linear step‑down solution | Switching step‑down power supply with overcharge, over‑discharge, over‑current & short‑circuit protection |
| Charging Method | Traditional removable battery charging | Non‑removable battery, direct charging |
| Obstacle Avoidance Sensor | Traditional infrared pair tube obstacle avoidance | Upgraded anti‑interference infrared obstacle avoidance |
| Line Tracking Sensor | RPR220 | RPR220 |
| Servo Gimbal | SR90 + SR04 solution | SR90 + SR04 solution |
| Assembly Method | No soldering, assembly tools included | No soldering, assembly tools included |
| Software Support | Scratch3 / Mixly / Mind+ / Arduino IDE | Scratch3 / Mixly / Mind+ / Arduino IDE |
Packing List
| Name | Specification | Quantity |
|---|---|---|
| ARD2WD Chassis | PCB material | 1 |
| TT Geared Motor | 1:48, soldered 2PXH connector | 2 |
| 65mm Wheel | Yellow rubber wheel | 2 |
| 18650 Dual Battery Holder | 2PXH connector | 1 |
| 18650 Lithium Battery | Lithium battery | 2 |
| 8.4V Battery Charger | Dual-bay charger | 1 |
| Arduino Mainboard | Uno R3 | 1 |
| Arduino Adapter Top Board | With mini breadboard | 1 |
| USB Type-B Data Cable | USB-B | 1 |
| Mini Infrared Remote Control | Silicone button version | 1 |
| 6P Flat Ribbon Cable | 2.54mm XH white cable | 1 |
| 4P Flat Ribbon Cable | 2.54mm XH white cable | 1 |
| 10P Female-to-Female Dupont Wires | 2.54mm, 20cm | 1 |
| 10P Male-to-Female Dupont Wires | 2.54mm, 20cm | 1 |
| Ultrasonic Sensor Module | HC-SR04 | 1 |
| Servo + Pan/Tilt Base + Top Plate | With installation accessories | 1 |
| M3*40 Nylon Spacer | M3*40 | 2 |
| Digital Voltage Display Module | Ard 2WD dedicated | 1 |
| M2*10 Brass Threaded Spacer | M2*10 | 2 |
| M2*6 Screw | M2*6 | 4 |
| Caster Wheel | 1 inch | 1 |
| M3*10 Brass Threaded Spacer | M3*10 | 2 |
| M3 Screwdriver (Phillips & Flathead) | Magnetic | 1 |
| Motor Mounting T-Plate | PCB material | 4 |
| M3*30 Screw | M3*30 | 4 |
| M3 Nut | M3 | 6 |
| M3 Screw | M3*6 | 16 |
| M3*25 Nylon Spacer | M3*25 | 4 |
| M3*10 Countersunk Screw | M3*10 countersunk | 4 |
| Packaging Box | — | 1 |
| Bonus Black Tape | 1 roll | 1 |
| QR Code for Documentation | Affixed to packaging | 1 |
| 4.0 Bluetooth Module | 4.0, supports iOS | 1 |